"It has to have at least a two shot capacity."
Okay, got that covered.
"It has to go bang on demand and only then."
So far, so good. It has (and has not) when proper.
"YOU and it have to hit what you want to most of the time."
Doggoneit Dave! I KNEW you were going to make it hard!
Seriously though, SG is my weakest of the three firearms but I am trying to correct that. Or, at least, bring up my pitiful skill level with some regular and hopefully well thought-out practise sessions. Unfortunately the place I am currently located has a severe lack of people whom I can practise and study with. So I depend upon this forum to give me ideas I can work with.
So far, TFL is helping.